I have Windows 10. I have tried everything listed from reinstalling to turning explorer on or off before connecting. I tried different USB ports and different cables. The Explorer+ does show charging when connected to the cable. It will connect to earthmate on my phone. But the link for a firmware update from earthmate gives a 404 (not found) error.
Is using a usb cable & computer the only way to undate firmware? If so, what do i need to try now?